〔Overnight Brief〕Lithium Nears 100,000 yuan/t on 40% Two-Month Drop Despite Sichuan LCE Reserves at 2.531 mt, While Escondida Strike Risk and INSG's Nickel-Surplus Flip Split the Metals Complex

0. Overnight Arc

The overnight metals tape ran on two rails. Lithium carbonate broke lower despite fresh Chinese resource additions, while copper held the line on a Wednesday strike threat at the world's largest mine, and the International Nickel Study Group (INSG) flipped its 2026 call to a slight surplus. Net: a demand-side collapse in lithium, a supply-side risk premium in copper, and a forecast-grade rebalance in nickel.

1. Lithium: Demand Collapse vs Resource Additions

• **[ONGOING] LC2701** closed Oct 12 at 104,740 yuan/ton, -11.79% intraday and -26.5% over September alone, the first close below 110,000 yuan since late December; nearly halved from May's 200,000+ yuan/ton peak ^[1].
• **[NEW] Sichuan Jiada lithium deposit** (Maerkang): 423,700 tonnes of lithium resources added, plus 3,251 tonnes of niobium and 1,752 tonnes of tantalum, at a 1.26% average ore grade. This single batch contributes 1,046,800 tonnes LCE, lifting the cumulative Jiada LCE from 1.4842 million tonnes to 2.531 million tonnes ^[2]. Mining rights holder: Anhui Province Dazhong New Energy Investment Co., Ltd., per the Ministry of Natural Resources' Oct 12 release carried by Sichuan Daily and Gelonghui ^[2].
• The contradiction is the story: the resource base is expanding while demand is weak enough to push spot toward 100,000 yuan/ton.

2. Copper: Escondida Strike Risk and the Dollar That Did Not Win

• **[ESCALATED] BHP's Escondida** in Chile: the supervisory union said contract talks collapsed, with a strike set to start unless Tuesday mediation extends; more than 1,000 union members could walk out from Wednesday ^[3][4].
• **[ESCALATED] Alexis Barrera**, head of the Escondida second supervisors and workers' union, called the proposed $25,500 per-worker signing bonus "below market" given record company profits; BHP countered that its package keeps Escondida supervisors "highest-paid in the industry" for comparable roles ^[4]. Antofagasta's separate mine also saw strikers return to the table ^[4].
• **[ONGOING] Dollar near a one-year high**, with funds cutting copper net longs by nearly 17,000 lots, yet the contract has not broken - one Chinese read argues the dollar "explains who is selling, not why prices haven't fallen" ^[5][6].
• **[NEW] Sina Finance macro research** argues copper's "new mid-range" is now set by the supply cycle: eroding inventory/buffer, price-insensitive new demand (grid, EV), and higher capex/breakeven for the next mining wave - and that the 2021-to-present rally has "decoupled" from traditional manufacturing demand ^[7].

3. Rio Tinto Q3: Bauxite/Alumina Beat, Copper Steady

• **[NEW] Bauxite** 15.75 million tonnes vs 15.22 million tonnes estimate, though -4% YoY ^[8][9].
• **[NEW] Alumina** 2.07 million tonnes vs 2.00 million tonnes estimate, +9.7% YoY ^[8][9].
• **[NEW] Copper** 205,000 tonnes for the quarter, steady, with Oyu Tolgoi (Mongolia) offsetting declines elsewhere; copper contributed more than a third of H1 earnings ^[10][11].
• **[NEW] Iron ore shipments** 90.8 million tonnes, +3% YoY, as the Simandou (Guinea) joint venture ramps ^[11].

4. Nickel and the Wider LME Tape

• **[NEW] INSG** now expects a slight 2026 primary-nickel surplus, reversing the deficit forecast made six months ago, with oversupply seen widening in 2027 ^[12].
• **[NEW] INSG volumes:** 2026 production 3.87 million tonnes vs demand ~3.85 million tonnes (+7.6% YoY); 2027 production projected at 4.07 million tonnes ^[12][13].
• **[NEW] LME close:** aluminum -$14 at $3,039/ton, zinc -$26 at $3,732/ton, nickel -$32 at $15,587/ton, tin -$1,442 at $51,767/ton; only lead closed green, +$18 at $1,902/ton (intraday +1% to $1,901.50) ^[14][15].
• **[NEW] SHFE tin main contract** dropped more than 2% to 389,240 yuan/ton, echoing the LME move ^[16].
• **[NEW] International Tin Association** flagged tin as a candidate material for green-hydrogen water splitting and methane-pyrolysis "turquoise" hydrogen, framing a longer-dated demand angle ^[17].

5. What Decides Next

• **Escondida:** Tuesday's mediation outcome vs a Wednesday strike start - the single largest supply trigger on the board ^[3][4].
• **Lithium:** whether LC2701 holds the 100,000 yuan/ton line; a clean break would mark a fresh leg down and a psychological reset ^[1].
• **Nickel:** INSG's surplus call is a forecast, not a settled print - LME warehouse flows and Chinese NPI output will be the first physical-market tests ^[12][13].
• Source quality: items ^[5] and ^[6] are Chinese-language relay notes on dollar-copper decoupling, treat as soft sourcing; ^[7] is a research framing, not a price catalyst.